Effect of Nitrogen Precursor on Optical Properties of Hexagonal Boron Nitride Quantum Dots

Abstract

Boron nitride quantum dots (BNQDs) are of high interest with their excellent photophysical andstructural characteristics. BNQDs can be synthesized through hydrothermal synthesis methods withdifferent nitrogen precursors; however, until now, the optical properties of BNQDS synthesized withdifferent nitrogen precursors have not been compared in details yet. In this study, BNQDS weresynthesized through hydrothermal synthesis methods by using urea, melamine, and thiourea as nitrogenprecursors and optical properties of BNQDS were compared by comparing emission and excitationcharacteristics of each BNQD synthesized by different nitrogen precursor. Structural properties of BNQDswere compared through infrared spectrum of each BNQDs. Our results revealed that the change innitrogen precursor causes significant differences in photophysical and structural properties of BNQDs.